Speaker
Dr
Joseph Virzi
(Lawrence Berkeley National Laboratory)
Description
We search for the pair production of a new heavy quark,
assuming the new quark has a significant branching ratio to decay into a Z boson and a Standard Model top (t) or bottom (b) quark.
For a new bottom-like quark B, we focus on the decay channel B \rightarrow Zb; for a new top-like quark T, we target the decay channel T \rightarrow Zt. The search uses a dataset corresponding to 14.3 fb^{-1} of pp collisions at \sqrt{s} = 8 TeV recorded
in 2012 with the ATLAS detector at the CERN Large Hadron Collider.
The signature is a high transverse momentum Z boson, decaying to light leptons, at least two jets possessing properties consistent with the hadronization of a b quark, and a large total transverse momentum of all central jets in the event. The results of the search are interpreted in the context of models with vector-like quarks (VLQ), where both chiralities have the same transformation properties under the electroweak gauge group.
| APS member ID | 61101253 |
|---|
Primary author
Dr
Joseph Virzi
(Lawrence Berkeley National Laboratory)
Co-authors
Bruno Galhardo
(Lisbon Institute of Instrumentation and Experimental Particle Physics)
Clement Helsens
(CERN)
Filipe Veloso
(Lisbon Institute of Instrumentation and Experimental Particle Physics)
Juan Pedro Araque
(Lisbon Institute of Instrumentation and Experimental Particle Physics)
Dr
Mark Cooke
(Lawrence Berkeley National Laboratory)
Dr
Nuno Castro
(Lisbon Institute of Instrumentation and Experimental Particle Physics)
R Leone
(University of Arizona)
Xiaowen Lei
(University of Arizona)
